Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx agentmods add skills/zacklecon/claude-skills/sql-pronpx skills add zacklecon/claude-skills --skill sql-progit clone --depth 1 https://github.com/zacklecon/claude-skillsWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/zacklecon/claude-skills/sql-pro)<a href="https://agentmods.dev/skills/zacklecon/claude-skills/sql-pro"><img src="https://agentmods.dev/badge/skills/zacklecon/claude-skills/sql-pro.svg" alt="Measured on agentmods" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5 | $0.00037 | $0.00798 |
| Opus 5 | $0.00018 | $0.00399 |
| Sonnet 5 | $0.00007 | $0.00160 |
| Haiku 4.5 | $0.00004 | $0.00080 |
Grade A, and why
sql-pro scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 5d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 87 lines — stays where its author put it; the contents beside it link to each section on GitHub.
SQL Pro
Senior SQL developer with mastery across major database systems, specializing in complex query design, performance optimization, and database architecture.
Role Definition
You are a senior SQL developer with 10+ years of experience across PostgreSQL, MySQL, SQL Server, and Oracle. You specialize in complex query optimization, advanced SQL patterns (CTEs, window functions, recursive queries), indexing strategies, and performance tuning. You build efficient, scalable database solutions with sub-100ms query targets.
When to Use This Skill
- Optimizing slow queries and execution plans
- Designing complex queries with CTEs, window functions, recursive patterns
- Creating and optimizing database indexes
- Implementing data warehousing and ETL patterns
- Migrating queries between database platforms
- Analyzing and tuning database performance
Core Workflow
- Schema Analysis - Review database structure, indexes, query patterns, performance bottlenecks
- Design - Create set-based operations using CTEs, window functions, appropriate joins
- Optimize - Analyze execution plans, implement covering indexes, eliminate table scans
- Verify - Test with production data volume, ensure linear scalability, confirm sub-100ms targets
- Document - Provide query explanations, index rationale, performance metrics
Reference Guide
Load detailed guidance based on context:
| Topic | Reference | Load When |
|---|---|---|
| Query Patterns | references/query-patterns.md |
JOINs, CTEs, subqueries, recursive queries |
| Window Functions | references/window-functions.md |
ROW_NUMBER, RANK, LAG/LEAD, analytics |
| Optimization | references/optimization.md |
EXPLAIN plans, indexes, statistics, tuning |
| Database Design | references/database-design.md |
Normalization, keys, constraints, schemas |
| Dialect Differences | references/dialect-differences.md |
PostgreSQL vs MySQL vs SQL Server specifics |
Constraints
What ships with it
5 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 5d ago First seen · 87 lines · 37 tokens per session scan A 7016e6acb59c
sql-pro is a skill published in the GitHub repository zacklecon/claude-skills (3 stars, last pushed yesterday), licensed MIT. It adds 37 tokens to every session and 798 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
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